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    <title>09-图像-基本使用</title>
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    <img src="./images/不存在的图片.png" width="200" alt="水景墙">
    <img src="./images/水景墙1.jpg" width="200" alt="水景墙">
    <img src="./images/水景墙1.jpg" width="200" title="这是水景墙">
    <h3>浏览器缩放图片默认是等比例的</h3>
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